Canadian Tides and Water Levels Data Archive

As Canada's national data center, the historical tide and water level data archive presently holds over 500 million records with the earliest dating back before the turn of the century. Over 2 million new observations, reported from the CHS permanent gauging network, are added on a daily and monthly basis. Data are also exchanged annually with Environment Canada.

Data and Products

• Canadian Station Inventory and Data Download
  (Interactive Map | List)
  Canadian tides and water level data. Station information, digital data inventory of observed water level data available for download.
• Great Lakes and St. Lawrence Seaway
  • Lastest Weekly Bulletin
  • Lastest Hourly Bulletin
• Station Benchmarks - Public access
  (Interactive Map | List)
  The tides and water levels benchmark database is where Canadian Hydrographic Service station benchmark information can be found.
• Global Sea Level Observing System (GLOSS)
  International sea level data. Data from the Canadian network is contributed to GLOSS on a regular basis.